• 研究表明完全循环加载过程中,由于残余应变存在,马氏相变应力循环增加而减小

    The research results show martensite transformation stress decreases with an increase in cycle due to the residual strain during full cyclic loading.

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  • 采用非线性有限元算法(FEM)成功地模拟形状复杂零件淬火过程中瞬态温度相变应力应变,获得直观的立体图象

    Three dimensional nonlinear and isoparameter FEM has been successfully used to simulate the transient temperature field, phase transformation, stress and strain of complex components during quenching.

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  • 结果表明,随着应变增大该合金相变滞后宽,马氏可逆转变量减少

    It is shown that the transformation hysteresis increases and the reversible martensite amount decreases as the increasing of the strain.

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  • 采取不同相变模式产生不同的切变应变,合金获得不同的形状记忆效应

    The different transformation model can produce different shear strain, so they show different shape memory effect.

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  • 如果冷却过程发生相变时候停止冷却并加载,加载应力-应变曲线只出现应力平台

    If the constrained thermal cycle stopped upon cooling while the forward martensitic transformation was in progress, the loading stress strain curves exhibited the stress plateau immediately.

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  • 模拟单向压缩实验通过形变参数变化考察了Q 235碳素钢应变强化相变基本规律及铁素体晶粒细化效果

    The characteristics of strain enhanced transformation and ferrite grain refinement are investigated under different processing parameters by thermal simulating tests of Q235 plain carbon steel.

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  • AFM马氏体相变形状应变特征观测直观准确真实

    The AFM observation of martensitic surface relief effect showed to be direct, accurate and vivid.

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  • 籍助于温度-相变-应力应变有限元分析方法(FEM),实现了复杂形状工件淬火过程计算机模拟

    Computer simulation on complicate shaped parts during quenching process has been realized by using FEM analysis of temperature field phase transformation-stress and strain.

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  • 利用背散射电子衍射取向成像技术分析了模拟单向压缩条件下Q235碳素钢应变强化相变中铁素体晶粒的取向(差)变化特点。

    The microstructure evolution of Q235 plain carbon steel in multi-pass hot deformation was investigated by means of hot compression simulation.

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  • 结果表明减小相变性能,如最大恢复应变、最大恢复应力等影响不大,显著提高动作频率

    The results show that the decrease of the diameter of a wire can not affect its phase transformation properties, but its work frequency can be increased markedly.

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  • 结果表明减小相变性能,如最大恢复应变、最大恢复应力等影响不大,显著提高动作频率

    The results show that the decrease of the diameter of a wire can not affect its phase transformation properties, but its work frequency can be increased markedly.

    youdao

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